AU113289B2 - Improvements in telephone systems - Google Patents

Improvements in telephone systems

Info

Publication number
AU113289B2
AU113289B2 AU1920/40A AU192040A AU113289B2 AU 113289 B2 AU113289 B2 AU 113289B2 AU 1920/40 A AU1920/40 A AU 1920/40A AU 192040 A AU192040 A AU 192040A AU 113289 B2 AU113289 B2 AU 113289B2
Authority
AU
Australia
Prior art keywords
telephone systems
telephone
systems
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
AU1920/40A
Other versions
AU192040A (en
Inventor
George Thomas Baker Reginald Taylor
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Automatic Telephone and Electric Co Ltd
Original Assignee
Automatic Telephone and Electric Co Ltd
Filing date
Publication date
Application filed by Automatic Telephone and Electric Co Ltd filed Critical Automatic Telephone and Electric Co Ltd
Application granted granted Critical
Publication of AU113289B2 publication Critical patent/AU113289B2/en
Publication of AU192040A publication Critical patent/AU192040A/en
Expired legal-status Critical Current

Links

AU1920/40A 1940-05-14 Improvements in telephone systems Expired AU113289B2 (en)

Publications (2)

Publication Number Publication Date
AU113289B2 true AU113289B2 (en) 1941-06-26
AU192040A AU192040A (en) 1941-06-26

Family

ID=

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